Peristaltic Pump Flow Rate Calculator

Flow Rate Formula:

\[ Q = \frac{RPM \times V_t}{231} \]

Flow Rate (GPM):

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1. What is a Peristaltic Pump Flow Rate Calculator?

Definition: This calculator estimates the flow rate of a peristaltic pump in gallons per minute (GPM) based on the pump's RPM and tube volume per revolution.

Purpose: It helps engineers, technicians, and researchers determine the flow rate of peristaltic pumps used in various applications like medical devices, chemical processing, and water treatment.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q = \frac{RPM \times V_t}{231} \]

Where:

\( Q \) — Flow rate (gallons per minute)
\( RPM \) — Pump speed (revolutions per minute)
\( V_t \) — Tube volume per revolution (cubic inches)
\( 231 \) — Conversion factor (cubic inches per gallon)

Explanation: The pump's RPM multiplied by the tube volume gives the displacement per minute, which is then converted to gallons per minute.

3. Importance of Flow Rate Calculation

Details: Accurate flow rate calculation ensures proper dosing, system performance, and process control in applications requiring precise fluid delivery.

4. Using the Calculator

Tips: Enter the pump RPM and the tube volume per revolution in cubic inches. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a peristaltic pump?
A: A type of positive displacement pump that uses rollers to compress flexible tubing, creating a pumping action that moves fluid through the tube.

Q2: How do I determine tube volume per revolution?
A: This is typically provided by the pump manufacturer or can be calculated as the internal cross-sectional area of the tube multiplied by the length of tubing compressed per revolution.

Q3: Why 231 in the formula?
A: 231 cubic inches equals 1 US gallon, converting the volume from cubic inches to gallons.

Q4: Does this account for pump efficiency?
A: No, this is the theoretical flow rate. Actual flow may be slightly less due to factors like tube elasticity and back pressure.

Q5: Can I use this for other pump types?
A: No, this formula is specific to peristaltic pumps. Other pump types have different flow rate calculations.